Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quando são todas as datas no ano de 2006?
 ###Tabelas: CREATE TABLE goalkeeping_leaders (goalkeeping_leaders_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Club VARCHAR, Games Played INT, Minutes INT, Goals Against INT, GA Average INT, Wins INT, Loses INT) CREATE TABLE singles:_23_12–11 (singles:_23_12–11_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE top_grossing_films_u.s. (top_grossing_films_u.s._id AUTO_INCREMENT PRIMARY KEY, Rank INT, Title VARCHAR, Studio VARCHAR, Director(s) VARCHAR, Gross VARCHAR) CREATE TABLE winners (winners_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Dates VARCHAR, Champion VARCHAR, Country VARCHAR, Score VARCHAR, Tournament location VARCHAR, Purse ($) INT, Winners share ($) INT) CREATE TABLE member_states (member_states_id AUTO_INCREMENT PRIMARY KEY, State VARCHAR, Adopted VARCHAR, Population (2011-01-01) VARCHAR, Nominal GDP World Bank, 2009 (million USD) INT, Relative GDP of total (nominal) VARCHAR, GDP per capita World Bank, 2009 nominal (USD) INT)  
SELECT COUNT Dates FROM winners WHERE Year = 2006